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Commitments, Contingencies and Off-Balance Sheet Risk (Tables) | 3 Months Ended
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Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract] |
Contractual Amounts of Financial Instruments with Off-Balance-Sheet Risk | The contractual amounts of financial instruments with off-balance-sheet risk were as follows for March 31, 2018 and December 31, 2017:
|  | Contract Amount |
|  | March 31, 2018 |  |  | December 31, 2017 |
|  | Fixed Rate |  |  | Variable Rate |  |  | Fixed Rate |  |  | Variable Rate |
Commitment to extend credit: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lines of credit and construction loans |  | $ | 8,339 |  |  | $ | 292,221 |  |  | $ | 4,982 |  |  | $ | 286,925 |
Overdraft protection |  |  | 2 |  |  |  | 33,007 |  |  |  | 7 |  |  |  | 33,353 |
Letters of credit |  |  | 624 |  |  |  | 2,627 |  |  |  | 624 |  |  |  | 2,637 |
|  | $ | 8,965 |  |  | $ | 327,855 |  |  | $ | 5,613 |  |  | $ | 322,915 |

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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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